Import existing source code

Dockerfile

@@ -0,0 +1,32 @@
+FROM golang:1.16-alpine AS build-env
+
+ENV USER=appuser
+ENV UID=8000
+
+RUN adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/null" \
+    --shell "/sbin/nologin" \
+    --no-create-home \
+    --uid "${UID}" \
+    "${USER}"
+
+WORKDIR /tmp/build
+ADD . /tmp/build
+# -ldlflags '-s' to strip binary
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o app -ldflags '-w -s'
+
+###
+
+FROM scratch
+
+COPY --from=build-env /etc/passwd /etc/passwd
+COPY --from=build-env /etc/group /etc/group
+COPY --from=build-env /tmp/build/app /usr/local/bin/idicon
+
+USER appuser:appuser
+
+EXPOSE 8000
+
+ENTRYPOINT ["/usr/local/bin/idicon"]